EDAC: Poll timeout cannot be zero, p2

Sanitize code even more to accept unsigned longs only and to not allow
polling intervals below 1 second as this is unnecessary and doesn't make
much sense anyway for polling errors.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: <stable@vger.kernel.org>

diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index e8c9ef0..aef5ec2 100644 (file)
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -601,7 +601,7 @@ static void edac_mc_workq_teardown(struct mem_ctl_info *mci)
  *     user space has updated our poll period value, need to
  *     reset our workq delays
  */
-void edac_mc_reset_delay_period(int value)
+void edac_mc_reset_delay_period(unsigned long value)
 {
        struct mem_ctl_info *mci;
        struct list_head *item;
@@ -611,7 +611,7 @@ void edac_mc_reset_delay_period(int value)
        list_for_each(item, &mc_devices) {
                mci = list_entry(item, struct mem_ctl_info, link);
 
-               edac_mc_workq_setup(mci, (unsigned long) value);
+               edac_mc_workq_setup(mci, value);
        }
 
        mutex_unlock(&mem_ctls_mutex);

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 8ec1747..b335c6a 100644 (file)
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -52,18 +52,20 @@ int edac_mc_get_poll_msec(void)
 
 static int edac_set_poll_msec(const char *val, struct kernel_param *kp)
 {
-       long l;
+       unsigned long l;
        int ret;
 
        if (!val)
                return -EINVAL;
 
-       ret = kstrtol(val, 0, &l);
+       ret = kstrtoul(val, 0, &l);
        if (ret)
                return ret;
-       if (!l || ((int)l != l))
+
+       if (l < 1000)
                return -EINVAL;
-       *((int *)kp->arg) = l;
+
+       *((unsigned long *)kp->arg) = l;
 
        /* notify edac_mc engine to reset the poll period */
        edac_mc_reset_delay_period(l);

diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 3d139c6..f2118bf 100644 (file)
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -52,7 +52,7 @@ extern void edac_device_workq_setup(struct edac_device_ctl_info *edac_dev,
 extern void edac_device_workq_teardown(struct edac_device_ctl_info *edac_dev);
 extern void edac_device_reset_delay_period(struct edac_device_ctl_info
                                           *edac_dev, unsigned long value);
-extern void edac_mc_reset_delay_period(int value);
+extern void edac_mc_reset_delay_period(unsigned long value);
 
 extern void *edac_align_ptr(void **p, unsigned size, int n_elems);